SQUEAKY NOISE IN EAR!

so last night i was at a concert, where i was standing very near the speakers.. and those speakers are just huge! there was no other space to stand so i had to stand there.. for almost 2 hours.. on my way home.. i felt as if my ears were plugged in with earbuds..thats how i was hearing.. now hearing is fine but im having that sqeaky kinda sound thats been there since last night..

anyone know what that is? or how can be cured?